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Resin composition, ultraviolet radiation shielding transparent resin form, and ultraviolet radiation shielding transparent resin laminate

A technology of resin composition and ultraviolet rays, applied in the field of resin composition and transparent resin molded body for ultraviolet shielding and transparent resin laminated body for ultraviolet shielding, can solve the problems of increased processing man-hours and increased manufacturing costs of molded bodies, and achieve improved dispersion properties, improvement of transparency and weather resistance, effects of suppressing photocatalytic activity

Inactive Publication Date: 2006-03-15
SUMITOMO METAL MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] And adopt the method described in JP-A-2003-292818 or JP-A-2004-59421, although the above-mentioned problems caused by the photocatalytic activity or dispersibility of the inorganic ultraviolet absorber can be reduced, but using this In the method, it is necessary to prepare silicon oxide-coated zinc oxide fine particles whose surface is coated with silicon oxide, so there is a problem that the number of processing steps increases, and the production cost of such a composition and molded article increases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 20 grams of titanium oxide (inorganic ultraviolet absorber) with an average particle diameter of 30 nanometers, 70 grams of toluene, and 10 grams of silane coupling agent (manufactured by Toray Douko-ning, SH6040) with methoxy groups and γ-glycidyloxypropyl groups ) and an appropriate amount of water, and milled for 30 hours with zirconia balls with a diameter of 0.5 mm to prepare 100 g of a dispersion of titanium oxide particles (liquid A).

[0043] Then, the above liquid A was added to the acrylic resin so that the concentration of titanium oxide was 1.0% by weight. After uniform mixing with a mixer, it was extruded to a thickness of 2 mm to obtain propylene for ultraviolet shielding in which titanium oxide particles were uniformly dispersed throughout. Sheet.

[0044] The optical properties of the produced acrylic sheet were measured with a spectrophotometer U-4000 from Hitachi, and the ultraviolet transmittance (τ UV ) and visible light transmittance (τ V ). The ...

Embodiment 2

[0047] A silane having a methoxy group and a γ-(2-aminoethyl)aminopropyl group by adding each component to an acrylic resin so that the concentration of zinc oxide (inorganic ultraviolet absorber) with an average particle diameter of 20 nm is 0.3% by weight The concentration of the coupling agent (manufactured by Toray Dowko-Ning, SZ6023) was 0.3% by weight, uniformly mixed with a mixer, and extruded to a thickness of 2 mm to obtain a propylene sheet for ultraviolet shielding in which zinc oxide particles were uniformly dispersed throughout.

[0048] Table 1 below shows the relationship between such optical properties (ultraviolet light transmittance, visible light transmittance, and haze) in relation to "the addition amount of the inorganic ultraviolet absorber and the surface treatment agent to the transparent thermoplastic resin" and "the relative amount of the surface treatment agent to the inorganic It is the proportion X of the ultraviolet absorber.

Embodiment 3

[0050] Each component was added to the acrylic resin so that the concentration of zinc oxide (inorganic ultraviolet absorber) with an average particle diameter of 20 nm was 6% by weight, and a silane coupling agent having a methoxy group and a vinyl group (manufactured by Toray Dow Corning, SZ6300 ) to a concentration of 6% by weight, uniformly mixed with a mixer, and by means of co-extrusion molding, acrylic resin (transparent substrate) with a thickness of 1.9 mm and zinc oxide with a thickness of 0.1 mm laminated on this substrate were obtained. Ultraviolet shielding acrylic resin laminate with a surface layer in which fine particles are uniformly dispersed.

[0051] Table 1 below shows the relationship between such optical properties (ultraviolet light transmittance, visible light transmittance, and haze) in relation to "the addition amount of the inorganic ultraviolet absorber and the surface treatment agent to the transparent thermoplastic resin" and "the relative amount ...

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Abstract

A resin composition in which an inorganic-type ultraviolet absorber stand dispersed in a transparent thermoplastic resin, and the ultraviolet absorber has been surface-treated with a surface treating agent selected from a silane coupling agent, a titanium coupling agent and so forth which have an alkoxyl group or a hydroxyl group and an organofunctional group, where the mixing ratio X of the surface treating agent to the inorganic-type ultraviolet absorber is set within the range of 0.05 C08K 9 / 06 C08K 3 / 22 C08L 33 / 00 C08L 69 / 00 C08L 27 / 06 C08L 25 / 06 C08L 81 / 06 C08L 67 / 00 C08L 23 / 00 B32B 27 / 00 0 16 1 2005 / 8 / 19 1746209 2006 / 3 / 15 000000000 Sumitomo Metal Mining Co. Japan Fujita Kenichi gao longxin wang ying 72003 Japan 2004 / 9 / 8 2004-260843

Description

technical field [0001] The present invention relates to a resin composition in which an inorganic ultraviolet absorber excellent in weather resistance is dispersed in a transparent thermoplastic resin, and particularly relates to an improved dispersibility of the inorganic ultraviolet absorber in the transparent thermoplastic resin, and the improvement of the inorganic ultraviolet absorber. Resin composition with suppressed photocatalytic activity and metal ion elution, and improvement of ultraviolet shielding transparent resin molded article and ultraviolet shielding transparent resin laminate formed by molding the resin composition. Background technique [0002] Molded products of transparent thermoplastic resins such as acrylic resins, polycarbonate resins, and polyester resins are widely used as building materials for outdoor use as building materials such as skylights, carports, and roofs due to their transparency and beautiful appearance. However, ultraviolet rays cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K3/22C08L33/00C08L69/00C08L27/06C08L25/06C08L81/06C08L67/00C08L23/00B32B27/00
CPCC08K9/04C08K9/06
Inventor 藤田贤一
Owner SUMITOMO METAL MINING CO LTD
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